Car-roof.



W. P. MURF'HY.

CAR ROO'F. APPLICATION FILED NOV. $191].

Patented Mar. 12, 1918.

unrrsn erectile arana ora ion.

WALTER P. MURPHY, OF NEW YORK, N. Y., ASSIGNOR T P. H. I lIUBPI-IY COMPAHY, 0F PARNASSUS, PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA.

can-noon.

Specification of Letters Patent.

Patented Mar; 112, ifilfie Application filed November 8, 1917; Serial No. 280,864.

' a citizen of the United States, and a resident of the city of New York, in the county of New York and State of New York, have invented a new and useful Improvement in Gar-Roofs, of which the following is a specification. U

My invention relates to car roots and more, particularly to roofs of the typewherein corrugated metal sheets extend entirely across thecar. In actual practice the dimensions of the corrugations of such sheets do not run uniform but are liable to deviate considerably -.fr 01n the standard dimensions and thereby affect the fit of one sheet with another and with the space allotted to it in the design of the car.

The principal object of the present invention is-to overcome-the disadvantages due to deviations in the dimensions of the corrugations, to provide for proper secur-.

'1 ing ofthe sheets to the "substructure in such manner as to-permit movement of the sheets relative toeach other; and to make proper .provision for flashing andv ventilating at the eaves.

CGIIStIllCtIOIl and combination of parts here- The invention consists in the inafter described and claimed. In. the accompanying drawing. which forms a part of this specification, and wherein'like symbols refer to like parts Wherever they occur, J

Figure 1 is a-plan view of a portion of a roof embodying my invention with parts broken away to expose the end portion of one of the carlines;

Fig. 2 is a cross-section 'on the line 22 Fig. IS a detail perspective view of one of the slotted holding plates; and

Fig. 4t is a detail section through the end portion of a cal-line on the line 4-'l of Fi 1. y

The present roof comprises corrugated metal roof sheets 1 arranged transversely of the car and of sufficient length to extend width of a roof sheet, are a number of plates or castings 3 with elongated slots 4 therein adapted to receive the shanks of bolts 5. These slotted plates 3 are positioned under the corrugation. of the overlapping sheet away from the lap, but next adjacent thereto; and this corrugation has a perforation,

preferably in its crest, large enough for the shank of the bolt 5 to "pass through; Surrounding the bolt and extending from the slotted plate to the under side of the corrugation 1s a thim'blefi, whose upper surface conforms to the curvature of the corrugation and Whose lower end rests on the slotted sirable where a metal side plate of Z-shape' is used, illustrated in Fig. 2. In this form, the slotted plate comprises a body portion which is riveted to the'xtop of the side plate and hasan upwardly ofi'set portion extending outwardly beyond the vertical member of theside plateand containing the elongated slot 4, the outer edge of the plate being within the outer limit of the lower flange of the side plate. Where the lap of the sheets occurs adjacent to-the carline, it is desirable to form the elongated slot in the carline 7 itself, as illustrated in Figs.- 1 and 4:. For this purpose, it is desirable to extend the end portion of the carline beyond the vertical member of the side plate so as to facilitate the placing of the bolts and insure that any leakage that might occur around the bolt will run down on the outside oi the car. VVhen narrow sheets are used in connection with the Wide spacing of the carlines, as illustrated in Fig. 1, the elongated slots may he used in the ends of the carlines in con unction with slotted,

plates intermediate the carlines.

Resting on top of the-corrugated sheet-s and extending lengthwise of the car along the eaves is a metal retaining and flashing strip 8 of angular section. One portion of this strip follows the pitch of the roof and is provided with bolt holes through which,

. edge rebent inwardly to form a stifi'ening fend sheet, the only 10" through the'sheets ar'e'the vertical bolts near.

. pass'the securing bolts 5; he inner edge 9 of this member is formed referably into an inverted 'U-shap'e to. stifl bn the retaining strip. The outer. portion of said strip 9 is bent vertically downward and has its lower flange. L

Itis noted that with the exception of 'the fasteners extendingone side margin of each sheetand that these bolts pass through the same corrugation,

selvesto any ordinary distortions of the car frame by reason of the fact that only one f preferably the third corrugation fromthe' side edge of'the upper .sheet at each joint. In consequence of this arrangement, the sheets are firmly enough secured to thesubstructure'but are free to accommodate them- 'ofthe sheets of'each lap is secured near the lap.- The function of the retaining and flashing .stri is to hold the 'roofsheets .down in proper re'ation to each other and to the substructure, and the downturned portion of the retaining. and flashing strip is intended to prevent'the entrance of moisture. at. the

. eaves.

By reason of the'elongation of the slot in the carlines and securing plates, ordinary deviations in the dimensions of the 'corrugations can be fully accommodated, and in case ofexcessive distortions of the car frame,

the sheets are tree to, move 'endwise of the car. 'So, too, the slot is made enough Wider than theshank of the bolt'to permit a slight movement of the sheets crosswise of the car,

such as occurs-When the car goes out of square. I

.I claim the following as my invention:

1. A. car roof comprising corrugated metal sheets extending crosswise of the car and lapped at their side margins, each sheet being secured to the substructure adjacent to one margin and being otherwise-free.

"2. A car roof comprising corrugated metal sheets extending crosswise of the car and' lapped along their side margins, one of the roof sheets being secured to the substructure close to said lap and the other sheet free in the region of the lap, and a retaining strip for holding down said sheets.

3. A car roof comprising a substructure, retaining plates thereon having elongated slots therein, overlapping roof sheets on said in through one sheet only of each gins,

lap. .8. A-canroof comprising metal sheets exbeing substructure, and fastening devices extending through said sheets and slots.

' LA car roof comprising a substructure "having holes for fastening devices, corruand a retaining strip for holding down said sheets, said retaining strip comprising a portion above the sheets and a downturned portionbeyond the ends of the sheets.

6 A car roof comprising a substructure having a Z-shaped side plate with its lower flange extending outwardly, corrugated metal sheets extending crosswise of the car and lapped at their side n argins, each sheet being secured to the substructure adjacent to one margin and being otherwise free, and

a a retaining strip comprising a portion above the sheets and a downturned portion beyond the ends of-the sheets but within the outer limit of the lower flange of the side plate.

. 7. A car roof comprising side plates, metal sheets extending crosswise of the car and overlapping said plates, said'sheets having raised stiffening members formed in their" surface and utthcir overlapping sidemar and fastening devices extending through the overlapping sheet ad acent each tending crosswise of the carand overlapping the top of the side Walls thereof, said sheets lapping each other at their side margins and having raised stiffening members formed therein, an angle-shaped retaining strip for holding down. said sheets and fastening devices extendingthrough the sheets outside of their overlapped side margins for securing said retaining strip, said angle strip having one of its legs above the sheets and the other turned downward and inwardbeyond the ends of said sheets.

Signed at, Chicago, Ill., this 2nd day of November, 1917. p

WALTER MURPHY. 

